Question Disable photo upload in google photo


I have a little f2 pro and I no longer want to upload the photos I take with the phone's camera to google photo.
For this purpose, I disabled the backup and synchronization function in the Google Photo application, but even so it uploads the photos from the phone instantly to Google Photo.
Is there any other method to stop this synchronization?
It seems to me a bit abusive what Google is doing. Easy, easy I want to start renouncing part of their services
I've been struggling for some time and I can't find a solution.